Door-joint construction.



A. H. SCHAFFERT.

DOOR JOINT CONSTRUCTION.

APPLICATION FILED JUNE 26, 1915.

1 ,23 1 ,069 Patented June 26, 1917.

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Specification of Letters Patent.

Application filed runs as, me. sesame. sates.

To all whom it my camera:

Be it known that I, Anonr I-I. SoHArrna'r, a citizen of theUnited States, residing at Youn town, in the county of Mahoning and tate of Ohio, have invented certain new and useful Improvements in Deer- Joint Obnstruction, of which the following is a specification.

' This invention relates to the subject of metal furniture and more particularly to door joints for metal safes or cabinets.

In the construction of fireproof cabinets This is an important feature in safe con-J struction, where it is not only desirable to provide a fireproof joint, but one that mate rially'adds to the safety of the structure. In carrying forward this plan of construction in a joint that is returned or doubled upon itself to provide the interlocking tongue and groove arrangement, as distined from a re lar step ed joint or a oint that merely ollows a roken line in substantially one direction, it has been dificult to avoid interference between the matching tongues and grooves unless unusually arge spaces are left, thereby making a loose and easily penetrated joint. This condition results where the interlocking members carried by the hinged edge of the door are located entirely on the door side of the hinge ivot. In other words, 1n such a manner that the interlochng oint portions thereof are located on the same side of the bin e pintle as the leaf of the hinge to which the door is secured. This construction is not only weak, since it affords only a smallinterlocking 'engagement between the door and door case, but does not in some cases produce an operative and fireproof joint.-

Accordingly, the present lnvention has primarily in view remedying these objections by supporting and interlockmg' the hinged edge portion of the door on both sides of the hinge pivot, thus eliminating any interference between the meetin trons of the door and door case,an provld ng a secure interlocking joint capable of being efiectually sealed.

A further object of the invention is to provide a neat and substantial construction susceptible of embodiment in various forms while observing the same general principles of construction and arrangement that make a practical and. efiective fireproof joint, which is slmple, and therefore capable of belng economically manufactured.

With the above and other objects in view which will more readily appear as the nature of the invention is better understood,

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Patented June 26, 1917.

the same consists in the novel construction,

combination, and arrangement of parts heremafter more fully described, illustrated, and claimed.

In the drawings- Figure 1 is a horizontal sectional view of a portion of a sheet metal safe, showing the construction of the door case and door at the hinged edge thereof.

Fig. 2is a detail sectional view showing a modification of the invention shown in Fig. 1. e I

Similar reference characters designate corresponding parts throughout the several figures of the drawings. 1

Although susceptible of embodiment in various forms, the invention is shown in Fig. 1 in connection with a sheet metal cabinet G of the safe type. A simple example of such a cabinet is shown in the drawings and in this illustration ll designates the opposite side walls of the cabinet, and 2 a-safe door, shown of hollow formation. The swinging or free edge 3 of the door'is preferably of stepped formation to match with a correspondingly stepped door case portion 4 formed at the front edge of one of the side walls of the' cabinet. The opposite side edge portion of the door is supported from the cabinet by any suitable number of hinges which may be of the conventional type each consisting of the hinge plates or leaves 5 and 6 and the hinge pintle 7. One of the hinge plates or leaves is rigidly. and permanently fastened to an outer face F of the door and i, f'as suggested in themodifi'cation of Fig. 2

' 7 the other hingeor leaf is permanently and 'riiidly. fastened to the outer face of the met. 'According to the application of the invention shown in Fi 1 of the drawings, the hinge is located in the usual position, namely at the front of the cabinet with theseparate leaves 5 and 6 thereof respectively, fastened to the front face A of due of the side walls and to the front face of the door 2, thus locating the hinge joint, between the door and the door case 7 across'the side or end portion of the door that lfits within the door case. This diposition of the hinge joint distinguishes, om the lateral arrangement of the hinge joint '"0f the" drawings, and which will be more particularly referred to. With further reference to the construction of the joint at the hinged edge of the j door, it will be observed from Fig. 1 that one of the side walls of the cabinet is formed adjacent its inner front edge with offset, or disposed whol a grooved doorcase portion designated generally as 8, and which includes the grooves 9 and 10 having therebetween a rib member 11. Inorder to match this formation of the door case the hinged edge of the door 2 is provided with a .complemental interlockin sealing portion having spaced ribs locking connection with the door case of the cabinet on the opposite side of the pivot fit , door with the leaf 5 of the hinge, and-thereof, the door becomes held or locked on both through the medium of the ribs 12 interlocking with the door case portion 8 of the cabinet. And, it will be noted that the ribs 12 are located entirel plane H opposite t e connection of the sides of the pivot 7.

By utilizing the above features it is possible to obtain a tighter joint between the 'hingededge of the door and the door case,-

with less interference than would be the case if the interlocking rib elements 12, at

the hinged edge of the door, were located within a plane on the same side of. the line :v-w, as the hinge connection 5 with the door. That is to say, where the offset interlocking rib portion of the door lies substantially within a sector formed by the face to which the leaf 6 is attached, the line H and the connecting are, it is possible for the interlocking rib portion to freely draw at the side of the' Laeaeee away from its complemental portion of the door case and also to enter the latter without interference. 7

A modified form of construction is shown in Fig. 2 of the drawin wherein the interlocking joint between t e door and the side of the cabinet has a lateral disposition Ion-- gitudinally of the door as distinguished from the transverse dis osition of the joint shown in Fig. 1 of the rawings. However, the modification of Fig. 2 embodies the same principles of construction already described% as it will be seen that though the leaf 5 o the hinge is secured to an outside end hinge face F on the door and the hinge leaf 6 secured to the outside face of the cabinet wall, 1, the hinge pivot 7 occupies the same relation to the plane w-w intersecting the face F at the corner 15 of the door as it does in Fig. 1. 1

It will also be observed in Fig. 2 that the rib 16 of the door is so dispose in a plane ofi'set to one side of the line 00-42:, that the same matches with a complemental groove 17 in the cabinet wall, at a point which is on the opposite side of the pintle 7 from the hinge leaf 5.

From the foregoing, it will be apparent that the invention resides in locating rib elements for matchin with a grooved door case, in sucha position that they will be.

ofi'set from or project be 0nd the corner-of the door adjacent the hinge pivot, andlie within a plane at the side of the hinge pivot which is opposite the hinge connection with the door itself. The present drawings havev shown the line H as arran ed both transverse, and longitudinally o the door, ac-

cording to whether the hinge face of the door is the front or side edge thereof, show: ing that the invention is adapted to various lee styles or types of cabinets or other similar I articles of furn'ture.

While the m ting metal ed es of the joint are designed to be suflicieny tight to resist the entrance of fire, the efficiency and sealing of the joint is further increased by the use of suitable fireproof packingma terial in the groove portions of the joint, designated in the several figures as M.

Without further description, it is thought that the many features and advantages of the invention will be readily apparent, and

it will also be understood that various changesin the form, proportion and minor details of construction may be resorted to without departing from the spirit ofthe invention or scope of the appended claim.

I claim:

A hinged joint for sheet metal cabinet doors including in combination, a door case having an inwardly stepped tongue and groove portion, a hinge carried by the door case and having the axis of its pintle located adjacent the corner of the outermost tongue thereof and intersected by a plane parallel with the outer face of said tongue, a door connected with said hinge and havin a stepped tongue and groove portion forme A therewith and complemental to that of the door case, the said tongue and groove portion of both the door case and door lying within the same area at the door case side of the plane above mentioned when they are interlocked.

In testimony whereof I hereunto aifix my signature in the resence of two witnesses.

AD LF H. SCHAFFERT. Witnesses: Y

A. J. WATSON, O. D. KAISER. 

